MSP430X22X2 Datasheet, PDF (52/87 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430x22x2, MSP430x22x4
MIXED SIGNAL MICROCONTROLLER
SLAS504B − JULY 2006 − REVISED JULY 2007
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (continued)
ILoad
OAx
RLoad
AV _CC
2
RO/P(OAx)
Max
O/P(OAx)
CLoad
Min
0.2V
Figure 25. OAx Output Resistance Tests
AVCC−0.2VAVCC _VOUT
operational amplifier OA, dynamic specifications (MSP430x22x4 only)
PARAMETER
TEST CONDITIONS
VCC
MIN
Fast Mode
SR
Slew rate
Medium Mode
Slow Mode
Open-loop voltage gain
φ_m
GBW
t_en(on)
t_en(off)
Phase margin
Gain margin
Gain-bandwidth product
(see Figure 26 and Figure 27)
Enable time on
Enable time off
C_L = 50 pF
C_L = 50 pF
Noninverting, Fast Mode,
R_L = 47 kΩ, C_L = 50 pF
Noninverting, Medium Mode,
R_L =300 kΩ, C_L = 50pF
Non-inverting, Slow Mode,
R_L =300 kΩ, C_L = 50pF
t_on, Noninverting, Gain = 1
2.2 V/3 V
2.2 V/3 V
2.2 V/3 V
TYP
1.2
0.8
0.3
100
60
20
MAX
2.2
UNIT
V/μs
dB
deg
dB
1.4
MHz
0.5
10
20 μs
1 μs
TYPICAL OPEN-LOOP GAIN vs FREQUENCY
140
120
100
80
Fast Mode
60
40
Medium Mode
20
0
Slow Mode
−20
−40
−60
−80
1
10
100
1000 10000
Input Frequency − kHz
Figure 26
100000
TYPICAL PHASE vs FREQUENCY
0
−50
−100
−150
−200
Fast Mode
Medium Mode
Slow Mode
−250
1
10
100
1000
Input Frequency − kHz
Figure 27
10000 100000
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